Sargent 65G37 Classroom Functi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$293.00
$182.06
Sargent Sargent 6500 Series - Classroom (65G37) Single Cylinder Standard Duty Cylindrical Lock, Grade 2 SGT-65G37

Sargent 65G37 Classroom Function Grade 2 Cylindrical Lock with Single Cylinder

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Model: 28LC-65G37 KB 26D
From the 6500 Series Collection
$293.00
$182.06
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$293.00
$182.06
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Sargent 6500 Series Classroom Function Grade 2 Cylindrical Lock with Single Cylinder

Professional Standard Duty Cylindrical Lock Solution

The Sargent 6500 Series Classroom Function Cylindrical Lock delivers reliable security for educational and commercial applications. This Grade 2 lock features a 2-3/4" standard backset, accommodates door thickness from 1-3/8" to 1-3/4", and includes a 1/2" latchbolt throw for secure latching. The non-handed design simplifies installation while exceeding ANSI/BHMA Grade 2 standards for dependable performance.

Professional Features & Benefits

  • Flexible Door Compatibility: Accommodates door thickness from 1-3/8" to 1-3/4" with backset options from 2-3/8" to 2-3/4" for versatile installation requirements.
  • Grade 2 Performance Rating: Exceeds ANSI/BHMA Grade 2 standards and complies with ANSI/BHMA A156.2 Series 4000 specifications for commercial-grade reliability.
  • Hurricane Code Compliance: Rugged design passes tests to comply with hurricane codes and Florida Building Code requirements including ASTM E330, ASTM E1996, and ASTM E1886 certifications.
  • Non-Handed Installation: Universal design eliminates handing requirements and fits modified 161 door preparations for simplified installation and inventory management.
  • Fire Safety Compliance: UL-cUL Fire-Rated up to 3 hours and NFPA 80 compliant for critical fire safety applications in commercial buildings.
  • Key System Compatibility: Available with most Sargent key systems including Degree, Signature, and XC for integration with existing access control systems.
  • ADA Compliance: Meets Americans with Disabilities Act requirements and ICC A117.1 standards for accessible design in public facilities.
  • Manufacturer Warranty: 1-year limited warranty provides confidence and protection for commercial installations.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness from 1-3/8" to 1-3/4" and backset from 2-3/8" to 2-3/4" as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for modified 161 door prep.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the cylindrical lock to door per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion with 1/2" latchbolt throw.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Educational Facilities and Classrooms
  • Commercial Office Buildings
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Retail Establishments
  • Industrial and Warehouse Facilities

Why Choose Sargent Quality?

Sargent 6500 Series cylindrical locks deliver professional-grade reliability with rugged construction that passes hurricane code compliance testing and exceeds ANSI/BHMA Grade 2 standards. UL-cUL Fire-Rated up to 3 hours with comprehensive certifications including Florida Building Code approval and ADA compliance. Engineered for demanding commercial applications where dependable security and code compliance are essential.

Product Specs

Series:
6500 Series
Grade:
Grade 2
Keyed Function:
Single Cylinder
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Lock Function:
Classroom
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Duty Level:
Standard Duty
Handle Type:
Lever
Product Attribute:
Cylindrical Locks
Product Function:
Classroom
Door Hand Direction:
Non-Handed
Product Category:
Mechanical Locks
Collection:
6500 Series
Department:
Door Hardware

Sargent 28LC-65G37 KB 26D – Frequently Asked Questions

1) Does a Sargent 65G37 classroom lock need to be ordered left hand or right hand?
No handing to specify. The 65G37 is non-handed, so one lock covers either swing and a property manager can stock a single part number for a whole building. It fits a modified 161 door prep, which is the standard cylindrical prep already in most commercial doors.
2) How does classroom function actually work on a Sargent 6500 lever lock?
Key outside, always-free lever inside. The classroom function is single cylinder, meaning the cylinder is on the outside only and the key locks or unlocks the outside lever. The inside lever is never locked, so anyone in the room can always get out. There is no pushbutton or thumbturn on the inside, so a teacher has to step into the corridor with a key to lock the door. If you want the room lockable from inside during a lockdown, you want a classroom security function instead, such as the Dexter C1000 Classroom Security.
3) Is the Sargent 65G37 lock fire rated for a labeled classroom door?
Yes. The 6500 Series classroom lever lock is UL-cUL fire rated up to 3 hours and NFPA 80 compliant, so it can go on a labeled opening. It also meets ADA and ICC A117.1 requirements for lever operation, which is what an institutional spec on a school or healthcare corridor door usually calls out.
4) What do I have to specify when ordering a Sargent 65G37 classroom lock?
Five things: backset (2-3/8 or 2-3/4 inch), strike, keying, keyway, plus lever style and finish. Lever comes as B, L or P. Cylinder is ordered as a standard 6-pin, LC less cylinder if your locksmith is supplying it, 60 for Sargent large format interchangeable core with a plastic disposable construction core, or 70 for small format interchangeable core. Keying options are standard keying, KD keyed different, KA keyed alike, MK master keyed, or none if you took the less cylinder route.
5) Can a Sargent 65G37 be keyed into our existing Sargent master key system?
Yes, if the building is on Sargent. The lock takes most Sargent key systems including Degree, Signature and XC, and it can be ordered master keyed, keyed alike across a group of rooms, or keyed different. Keyway choices run from LA standard through the CA-CR, HA-HK, LB-LL and RA-RL families plus R, S and U, so give your locksmith the keyway stamped on your existing key and match it. If your keying is done in house, order the LC less cylinder version and pin your own.
6) What is the closest Grade 1 classroom lever lock to the Sargent 65G37?
The Dexter C1000 Series classroom cylindrical lever lock is the Grade 1 classroom equivalent. It is keyed with a clutching lever and fits doors 1-3/8 inch to 1-3/4 inch thick, the same door thickness range the 65G37 covers. The Sargent 65G37 is a Grade 2 classroom cylindrical lever lock. Both keep the outside lever locked or unlocked by key from the corridor side, so the difference is the ANSI/BHMA grade and the clutching lever mechanism rather than the function.
7) The door is a storeroom, not a classroom. What lock goes there instead of the 65G37?
Use a storeroom function lock: the Cal-Royal AG05 is a Grade 2 storeroom leverset with a deadlocking latchbolt for doors 1-3/8 inch to 1-3/4 inch, and the Hager 2580 is a Grade 2 storeroom cylindrical lock with the Withnell lever for doors 1-3/8 inch to 2 inch. On a storeroom lock the outside lever stays locked at all times and the key retracts the latch; the Sargent 65G37 is classroom function, where the key locks and unlocks the outside lever and leaves it in that state.
8) What lever lock takes a Schlage C keyway if the building is already keyed to Schlage?
The Cal-Royal AG03 classroom lever and the Cal-Royal AG00 entrance lever both come with a 6-pin Schlage C keyway keyed different; the AG03 is a 2-3/4 inch backset and the AG00 a 2-3/8 inch backset, and both Cal-Royal levers fit doors within the 1-3/8 inch to 1-3/4 inch range. The Sargent 65G37 is ordered in Sargent keyways such as LA standard and works with Sargent key systems including Degree, Signature and XC.
9) Should I use an interchangeable core or a standard cylinder on a school lock?
Depends who rekeys your doors. The 6500 classroom lock offers a standard 6-pin cylinder, a 60 large format interchangeable core, or a 70 small format interchangeable core, both IC options shipping with a plastic disposable construction core. An interchangeable core lets your own maintenance staff swap keying in seconds with a control key, which is why districts and hospitals standardize on it. The construction core matters on new builds: trades use it during the job, then you pull it and drop in the permanent core at turnover without touching the lock.
10) Is a Grade 2 lock strong enough for a school classroom door, or do I need Grade 1?
Grade 2 is the standard duty tier under ANSI/BHMA A156.2, and the 6500 Series classroom lock meets it as a Series 4000 lock. That is adequate for classroom doors, offices and multi-tenant residential. For a heavily abused opening, a corridor cross door or a public restroom cycled all day, step up to Grade 1: the Dexter C1000 classroom lever is a Grade 1 clutching classroom lock that also covers 1-3/8 to 1-3/4 inch doors.
11) Can this Sargent lock be used on an exterior door in a hurricane zone?
The 6500 Series lock passes testing to comply with hurricane codes and the Florida Building Code, including ASTM E330, ASTM E1996 and ASTM E1886. That covers the lock itself; the opening still has to be an approved assembly. Note the classroom function is keyed outside with a free inside lever, so it does not secure a perimeter door the way a storeroom function does, where the outside lever stays locked at all times.
12) What is a cheaper Grade 2 classroom lever than the Sargent 6500?
The Cal-Royal AG03 is a Grade 2 classroom lever with a 6-pin Schlage C keyway keyed different and a 2-3/4 inch backset. It is a straight functional substitute for a classroom door if you are not tied to a Sargent key system. The reason to stay with the Sargent 65G37 is keying: if your campus masters on Sargent Degree, Signature or XC, a Schlage C keyway lock cannot join that system and you end up carrying a second key.
13) I need matching passage and storeroom levers to go with my classroom locks. What else works?
Match by keyway family first, function second. Within the same commercial Grade 2 tier, the Hager 2580 with Withnell lever is a storeroom function covering 1-3/8 to 2 inch doors, the Hager 2510 is passage over the same range, and the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt for 1-3/8 to 1-3/4 inch doors. If the whole building has to key alike, keep every keyed opening in the Sargent 6500 family and order them KA or MK together; mixing brands means mixing keyways.
14) I need a lock for a door 2 inches thick. Will the Sargent 65G37 work?
The Sargent 65G37 covers doors 1-3/8 inch to 1-3/4 inch thick. For a 2 inch door, the Falcon K101 Grade 1 passage lock covers 1-3/8 inch to 2-1/4 inch, and the Corbin Russwin CL3110 Grade 1 vandal resistant passage lever covers 1-3/4 inch to 2 inch. Both are passage function, so confirm the opening does not need keying before substituting.
15) What should I use if the door does not need to be locked at all, just latched?
For an opening that only needs a latch and no key, the Falcon B101 is a Grade 2 cylindrical passage lever with a non-handed design, and the Falcon K101 is the Grade 1 heavy duty passage version covering doors 1-3/8 inch to 2-1/4 inch. The Sargent 65G37 is a keyed classroom lock with a single cylinder, so it carries a cylinder and keying you would not use on a hall or closet door.
16) What is the difference between a classroom lock and an entry/office lock on an office door?
An entry/office lock has a pushbutton or thumbturn inside so the occupant can secure the door without a key. The Dexter C1000 entry/office lever is Grade 1 keyed and clutching for doors 1-3/8 inch to 1-3/4 inch, the Falcon B511CP6D is a Grade 2 medium duty entry/office lever, and the Hager 2525 is a Grade 2 commercial entry lever for doors 1-3/8 inch to 2 inch. The Sargent 65G37 is classroom function, controlled only by key from the outside, which is the point on a room where staff and not occupants decide when it is locked.
17) Should I put an electronic keypad lever on the classroom door instead of a keyed lock?
A keypad lever replaces the key with a code. The Delaney LP250 is a Grade 2 electronic keypad leverlock and the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in passage function for doors 1-1/8 inch to 2 inch. The Sargent 65G37 is a keyed classroom lock that integrates with Sargent Degree, Signature and XC key systems, which is what keeps the room on the building master key rather than on a separately managed code.
18) What do I use on a door that needs to be locked and unlocked by an access control system?
That calls for an electrified lever. The Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever running on 12VAC/DC for doors 1-3/4 inch to 2 inch, available with the NZ lever and D rose. The Sargent 65G37 is a mechanical keyed classroom lock, so it is operated by key and lever only and has no electrical connection to a card reader or release.
19) Is a privacy lever an acceptable substitute for a classroom lock on a restroom door?
For a restroom the privacy function is the correct part, not the classroom lock. The Hager 2540 is a Grade 2 privacy cylindrical lock with the Withnell lever for doors 1-3/8 inch to 2 inch, the Kwikset 300BRNL RDT Breton is a Grade 3 privacy lever for doors 1-3/8 inch to 1-3/4 inch, and the Arrow MK02-TA is a fire rated privacy cylindrical lock with a Tudor knob. Privacy locks are secured by an inside turn with an emergency release outside; the Sargent 65G37 is keyed from the outside with a single cylinder, which is a different operation entirely.
20) I need a lever, not a knob. Which of the cylindrical locks are knob trim?
The Arrow HK11-BB is a turn-pushbutton entrance cylindrical lock with a ball knob and conventional cylinder for doors 1-3/8 inch to 1-3/4 inch, the Arrow MK33-BD-CS is a heavy duty asylum lock with a ball knob and Schlage C keyway, and the Arrow MK02-TA uses a Tudor knob. Those are knob trim and will not meet an ADA lever requirement. The Sargent 65G37 is lever trim, offered with B, L and P levers, and meets Americans with Disabilities Act requirements and ICC A117.1.
21) Does the Sargent 65G37 need to be ordered handed like some lever locks?
No. The Sargent 65G37 is non-handed and fits a modified 161 door prep, so one part covers left and right hand openings. Some comparable levers are handed and must be ordered per door: the Baldwin Estate 5103 half dummy comes as a distinct left hand and right hand part. The Falcon B101 and Falcon K101 passage levers are also non-handed. On a fleet order, the non-handed parts cut the number of line items you carry.
22) What finishes does the Sargent 6500 classroom lever come in for matching existing hardware?
Seven: 03 bright brass clear coated, 04 satin brass clear coated, 10B dark oxidized satin bronze oil rubbed, 10BE dark oxidized satin bronze, 26 bright chromium plated over nickel, 26D satin chromium plated over nickel, and BSP black suede powder coat. For a school or office corridor already running satin chrome, 26D is the match. Lever style is separate, B, L or P, so a fleet of doors can carry the same lever shape across passage, classroom and storeroom functions.
23) Can I use a dummy lever in place of the 65G37 on an inactive leaf?
A dummy trim is pull-only hardware with no latch, so it is not a substitute anywhere the door has to latch. For an inactive leaf, the BEST 9K Series 1DT is a Grade 1 heavy duty non-keyed single dummy trim lever and the BEST 7KC Series 1DT is the Grade 2 medium duty single dummy trim. The Sargent 65G37 is a keyed classroom lock with a latchbolt and cylinder, which the inactive leaf does not use.
24) Is there a Grade 3 lever lock that would work on a light traffic door?
The Cal-Royal AUS00 is a Grade 3 entrance/office lever with a solid brass forged body for doors 1-3/8 inch to 1-3/4 inch, and the Callan Artino is a Grade 3 entrance leverset. Both are entrance function rather than classroom. The Sargent 65G37 is a Grade 2 standard duty commercial lock, so on a low traffic interior door the Grade 3 levers cover the opening while the 65G37 is the choice where the ANSI/BHMA Grade 2 commercial rating is specified.
25) What lock goes on a utility or mechanical room where the lever must never be free?
The Arrow MK33-BD-CS is a Grade 2 heavy duty asylum function cylindrical lock with a ball knob and Schlage C keyway, and the Dexter C1000 asylum lock is Grade 1 for doors 1-3/8 inch to 2 inch. Asylum function keeps both sides keyed with no free operation. The Sargent 65G37 is classroom function, where the inside lever is always free to exit, which is what you want on an occupied room but not on a mechanical space you are keeping keyed on both faces.
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Absolutely. The Sargent 28LC-65G37 KB 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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